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Last active November 12, 2021 11:42
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Print current Mac wattage (with accuracy up to minute)
#!/usr/bin/env bash
set -euo pipefail
function extract_float_field() {
ioreg -rw0 -c AppleSmartBattery |
grep BatteryData |
sed -E "s/.*\"$field\"=([0-9]+).*/\1/" |
xargs -I % lldb --batch -o "print/f %" | # Convert IEEE-754 float
grep -o '$0 = [0-9.]*' |
sed 's/.*= //'
printf -- 'Charging (watt): '
extract_float_field AdapterPower
printf -- 'Consumption (watt): '
extract_float_field SystemPower
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